Conceptually, I agree with you. Unfortunately, the waters have been muddied with respect to native platform tools. Honest questions:

Windows - Win32 (C API) or MFC (C++) or WinForms (C#) or WPF or ...? macOS - Cocoa/AppKit in ObjC or Swift/AppKit? Linux - Qt (C++) or Gtk 2 or Gtk 3 or Gtk 4?